1 /* 2 * fake library for ssh 3 * 4 * This file includes getnameinfo(). 5 * These funtions are defined in rfc2133. 6 * 7 * But these functions are not implemented correctly. The minimum subset 8 * is implemented for ssh use only. For exapmle, this routine assumes 9 * that ai_family is AF_INET. Don't use it for another purpose. 10 */ 11 12 #include "includes.h" 13 #include "ssh.h" 14 15 RCSID("$Id: fake-getnameinfo.c,v 1.2 2001/02/09 01:55:36 djm Exp $"); 16 17 #pragma ident "%Z%%M% %I% %E% SMI" 18 19 #ifndef HAVE_GETNAMEINFO 20 int getnameinfo(const struct sockaddr *sa, size_t salen, char *host, 21 size_t hostlen, char *serv, size_t servlen, int flags) 22 { 23 struct sockaddr_in *sin = (struct sockaddr_in *)sa; 24 struct hostent *hp; 25 char tmpserv[16]; 26 27 if (serv) { 28 snprintf(tmpserv, sizeof(tmpserv), "%d", ntohs(sin->sin_port)); 29 if (strlen(tmpserv) >= servlen) 30 return EAI_MEMORY; 31 else 32 strcpy(serv, tmpserv); 33 } 34 35 if (host) { 36 if (flags & NI_NUMERICHOST) { 37 if (strlen(inet_ntoa(sin->sin_addr)) >= hostlen) 38 return EAI_MEMORY; 39 40 strcpy(host, inet_ntoa(sin->sin_addr)); 41 return 0; 42 } else { 43 hp = gethostbyaddr((char *)&sin->sin_addr, 44 sizeof(struct in_addr), AF_INET); 45 if (hp == NULL) 46 return EAI_NODATA; 47 48 if (strlen(hp->h_name) >= hostlen) 49 return EAI_MEMORY; 50 51 strcpy(host, hp->h_name); 52 return 0; 53 } 54 } 55 return 0; 56 } 57 #endif /* !HAVE_GETNAMEINFO */ 58